Screening of Microcystins in water samples at 0.1 ppb (drinking water) Format: 10 tests (5 tests/5 controls) Not provided: Water Sample Bottles Run Time: 15 Minutes Finished Drinking Water
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Screening of Microcystins in water samples at 0.1 ppb (drinking water)
Attogene’s Microcystin Test Kit (Rapid – Drinking Water) can be used to detect microcystins in water to as low as 0.1ppb; highly sensitive, rapid, robust screening kit for microcystins and nodularins.
The most frequently reported cyanobacterial toxins are the hepatotoxic microcystins (MCs). MCs are peptides with a molecular weight ranging from 900 to 1,100 Da. They consist of seven amino acids of which the two terminal amino acids of the linear peptide are condensed to form a cyclic compound.
A tiered notification system which takes different actions based on thresholds for microcytin-LR concentrations in drinking waters has been developed. This is guidance that allows states to take various actions.
For the rapid screening of microcystins in drinking water samples at or above 0.1 ppb. Samples requiring regulatory action should be confirmed by ELISA, HPLC, or other conventional methods.
To protect consumers from adverse health effects caused by these toxins, the World Health Organization (WHO) has proposed a provisional upper limit for Microcystin-LR of 1.0 ppb (μg/L) in drinking water.
The U.S. Environmental Protection Agency (EPA) has also established guidelines for Microcystins in drinking water:
-For children below school age, 0.3 μg/L (ppb)
-For all other age groups, 1.6 μg/L (ppb)
Other Products
L-Glutamine/Ammonia Assay Kit (Rapid)
Product Info
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Product Info
K-GLNAM
SKU: 700004295
50 assays of each (manual) / 500 assays of each (microplate)
Content:
50 assays of each (manual) / 500 assays of each (microplate)
Shipping Temperature:
Ambient
Storage Temperature:
Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 2 years under recommended storage conditions
Analyte:
Ammonia, L-Glutamine
Assay Format:
Spectrophotometer, Microplate
Detection Method:
Absorbance
Wavelength (nm):
340
Signal Response:
Decrease
Linear Range:
1 to 40 µg of L-glutamine per assay
Limit of Detection:
0.54 mg/L (L-glutamine), 0.06 mg/L (ammonia)
Reaction Time (min):
~ 10 min
Application examples:
Cell culture media and cultures, dietary supplements, vegetables and other materials (e.g. biological samples, etc.).
Method recognition:
Novel method
This product has been discontinued.
The L-Glutamine/Ammonia (Rapid) test kit is a novel method for the specific, convenient, cost effective and rapid measurement and analysis of L-glutamine and ammonia in culture media/supernatants and other materials.
Note for Content: The number of manual tests per kit can be doubled if all volumes are halved. This can be readily accommodated using the MegaQuantTM Wave Spectrophotometer (D-MQWAVE).
Extended cofactors stability. Dissolved cofactors stable for > 1 year at 4oC.
Very rapid reaction due to use of high activity glutaminase and uninhibited glutamate dehydrogense
All enzymes supplied as stabilised suspensions
Only enzymatic kit available
Very cost effective
All reagents stable for > 2 years after preparation
Mega-Calc™ software tool is available from our website for hassle-free raw data processing
Standard included
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The L-Glutamine/Ammonia (Rapid) test kit is a novel method for the specific, convenient, cost effective and rapid measurement and analysis of L-glutamine and ammonia in culture media/supernatants and other materials.
Gel images of different ranges of library size selection. Sheared human genomic DNA was used as input.
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Library size selection is an enrichment of a specific range of library sizes for NGS library preparations. The NGS library preparation is related to the quality of the sequencing data. Precise NGS library size selection can increase sequencing efficiency, improve data quality, and reduce costs.
There are two types of sequencing technologies: short-read sequencing and long-read sequencing. Short-read sequencing uses DNA libraries that contain small insert DNA fragments of similar sizes, usually several hundred base pairs. The sequencing efficiency can be improved if the DNA size selection is in the right range. Cat.# 20104S and 20104L are the best kits for NGS library size selection of illumina paired-end 100 (PE100) sequencing with 100-200 bp library inserts; Cat.# 20105S and 20105L are the best kits for NGS library size selection of illumina paired-end 150 (PE150) sequencing with 150-300 bp library inserts; and Cat.# 20106S and 20106L are the best kits for NGS library size selection of illumina paired-end 300 (PE300) sequencing with 300-600 bp library inserts.
Long-read sequencing uses a large DNA fragment as input and makes very long reads. Usually, library size selection is preferred to remove smaller fragments. Cat.# 20110S and 20110L are the best kits for long-read sequencing size selection with DNA sizes >5 kb, and Cat.# 20111S and 20111L are the best kits for long-read sequencing size selection with DNA sizes >10 kb.
The magnetic beads, or SPRI (Solid Phase Reversible Immobilization) beads, is well used for the purification of DNA due to their reversible DNA binding. The NGS library can be size-selected by the magnetic beads or SPRI beads. The properties of the magnetic beads can be changed for a specific range of DNA binding. The contaminants and other unwanted components in the libraries can also be removed during size selection.
Specific ranges of NGS libraries can be selected using magnetic beads with different buffer compositions. The first DNA-beads binding step, also called the right-side clean-up, removes large NGS library fragments. The large NGS library fragments that bind to the beads are discarded with the beads pellet. The desired NGS library fragments in the supernatant are transferred to a new well, and new beads are added to the supernatant for the second beads-DNA binding, also called the left-side clean-up. After the rinsing step, the NGS library fragments with the dual selection are eluted in water or an appropriate buffer. The magnetic beads method has great advantages over time-consuming column purification and tedious gel-based purification.
NGS library size selection with dual clean-ups.
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Library size selection for long-read sequencing only requires a single clean-up. In this case, only the large library fragments are bound to the beads, while other small library fragments are discarded with the supernatant. The selected larger library fragments are eluted in water or an appropriate buffer after the rinsing step.
NGS library size selection with single clean-up for >5 kb and >10 kb libraries.
TCO-PEG24-DBCO is a monodisperse, long PEG linker featuring a trans-cyclooctene and a DBCO group. DBCO easily reacts with azides through click chemistry, while the TCO group readily reacts with tetrazine-containing compounds.
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TCO-PEG24-DBCO is a monodisperse, long PEG linker featuring a trans-cyclooctene and a DBCO group. DBCO easily reacts with azides through click chemistry, while the TCO group readily reacts with tetrazine-containing compounds.
